#ifndef UTILITY_H
#define UTILITY_H

#include "TH1D.h"
#include "TString.h"

void qcd_est_by_jets(TH1D *h_qcd_njets, vector<Double_t> *qcd, vector<Double_t> *qcd_err);

vector<Double_t> eff_fake_contaminate(TString hfile, Int_t njets=0, int mode='+');

#endif
